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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.65 by root, Tue Oct 24 00:26:32 2006 UTC vs.
Revision 1.100 by root, Fri Jun 1 06:00:40 2007 UTC

1	#if __linux	1	#include "xthread.h"
2	# define _GNU_SOURCE
3	#endif
4
5	#define _REENTRANT 1
6		2
7	#include <errno.h>	3	#include <errno.h>
8		4
9	#include "EXTERN.h"	5	#include "EXTERN.h"
10	#include "perl.h"	6	#include "perl.h"
11	#include "XSUB.h"	7	#include "XSUB.h"
12		8
13	#include "autoconf/config.h"	9	#include "autoconf/config.h"
14		10
15	#include <pthread.h>
16
17	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
18	#include <errno.h>	13	#include <errno.h>
19	#include <sys/time.h>	14	#include <sys/time.h>
20	#include <sys/select.h>	15	#include <sys/select.h>
21	#include <sys/types.h>	16	#include <sys/types.h>
22	#include <sys/stat.h>	17	#include <sys/stat.h>
23	#include <limits.h>	18	#include <limits.h>
24	#include <unistd.h>	19	#include <unistd.h>
25	#include <fcntl.h>	20	#include <fcntl.h>
26	#include <signal.h>	21	#include <signal.h>
27	#include <sched.h>	22	#include <sched.h>
		23	#include <utime.h>
28		24
29	#if HAVE_SENDFILE	25	#if HAVE_SENDFILE
30	# if __linux	26	# if __linux
31	# include <sys/sendfile.h>	27	# include <sys/sendfile.h>
32	# elif __freebsd	28	# elif __freebsd
…		…
39	# else	35	# else
40	# error sendfile support requested but not available	36	# error sendfile support requested but not available
41	# endif	37	# endif
42	#endif	38	#endif
43		39
		40	/* number of seconds after which idle threads exit */
		41	#define IDLE_TIMEOUT 10
		42
44	/* used for struct dirent, AIX doesn't provide it */	43	/* used for struct dirent, AIX doesn't provide it */
45	#ifndef NAME_MAX	44	#ifndef NAME_MAX
46	# define NAME_MAX 4096	45	# define NAME_MAX 4096
47	#endif	46	#endif
48		47
49	#if __ia64
50	# define STACKSIZE 65536
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
52	# define STACKSIZE PTHREAD_STACK_MIN
53	#else
54	# define STACKSIZE 16384
55	#endif
56
57	/* buffer size for various temporary buffers */	48	/* buffer size for various temporary buffers */
58	#define AIO_BUFSIZE 65536	49	#define AIO_BUFSIZE 65536
59		50
60	#define dBUF \	51	#define dBUF \
		52	char *aio_buf; \
		53	LOCK (wrklock); \
61	char *aio_buf = malloc (AIO_BUFSIZE); \	54	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		55	UNLOCK (wrklock); \
62	if (!aio_buf) \	56	if (!aio_buf) \
63	return -1;	57	return -1;
64		58
65	#define fBUF free (aio_buf)	59	typedef SV SV8; /* byte-sv, used for argument-checking */
66		60
67	enum {	61	enum {
68	REQ_QUIT,	62	REQ_QUIT,
69	REQ_OPEN, REQ_CLOSE,	63	REQ_OPEN, REQ_CLOSE,
70	REQ_READ, REQ_WRITE, REQ_READAHEAD,	64	REQ_READ, REQ_WRITE, REQ_READAHEAD,
71	REQ_SENDFILE,	65	REQ_SENDFILE,
72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	66	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
		67	REQ_UTIME, REQ_FUTIME, /* must be consecutive */
		68	REQ_CHMOD, REQ_FCHMOD, /* must be consecutive */
		69	REQ_CHOWN, REQ_FCHOWN, /* must be consecutive */
73	REQ_FSYNC, REQ_FDATASYNC,	70	REQ_FSYNC, REQ_FDATASYNC,
74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	71	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
75	REQ_READDIR,	72	REQ_MKNOD, REQ_READDIR,
76	REQ_LINK, REQ_SYMLINK,	73	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
77	REQ_GROUP, REQ_NOP,	74	REQ_GROUP, REQ_NOP,
78	REQ_SLEEP,	75	REQ_BUSY,
79	};	76	};
80		77
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	78	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"	79	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		80
84	typedef struct aio_cb	81	typedef struct aio_cb
85	{	82	{
86	struct aio_cb *volatile next;	83	struct aio_cb *volatile next;
87		84
88	SV *data, *callback;	85	SV *callback;
89	SV *fh, *fh2;	86	SV *sv1, *sv2;
90	void *dataptr, *data2ptr;	87	void *ptr1, *ptr2;
91	Stat_t *statdata;
92	off_t offset;	88	off_t offs;
93	size_t length;	89	size_t size;
94	ssize_t result;	90	ssize_t result;
		91	double nv1, nv2;
95		92
96	STRLEN dataoffset;	93	STRLEN stroffset;
97	int type;	94	int type;
98	int fd, fd2;	95	int int1, int2, int3;
99	int errorno;	96	int errorno;
100	mode_t mode; /* open */	97	mode_t mode; /* open */
101		98
102	unsigned char flags;	99	unsigned char flags;
103	unsigned char pri;	100	unsigned char pri;
…		…
105	SV *self; /* the perl counterpart of this request, if any */	102	SV *self; /* the perl counterpart of this request, if any */
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	103	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
107	} aio_cb;	104	} aio_cb;
108		105
109	enum {	106	enum {
110	FLAG_CANCELLED = 0x01,	107	FLAG_CANCELLED = 0x01, /* request was cancelled */
		108	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		109	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
111	};	110	};
112		111
113	typedef aio_cb *aio_req;	112	typedef aio_cb *aio_req;
114	typedef aio_cb *aio_req_ornot;	113	typedef aio_cb *aio_req_ornot;
115		114
…		…
117	PRI_MIN = -4,	116	PRI_MIN = -4,
118	PRI_MAX = 4,	117	PRI_MAX = 4,
119		118
120	DEFAULT_PRI = 0,	119	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,	120	PRI_BIAS = -PRI_MIN,
		121	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
122	};	122	};
123		123
		124	#define AIO_TICKS ((1000000 + 1023) >> 10)
		125
		126	static unsigned int max_poll_time = 0;
		127	static unsigned int max_poll_reqs = 0;
		128
		129	/* calculcate time difference in ~1/AIO_TICKS of a second */
		130	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		131	{
		132	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		133	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		134	}
		135
		136	static thread_t main_tid;
		137	static int main_sig;
		138	static int block_sig_level;
		139
		140	void block_sig ()
		141	{
		142	sigset_t ss;
		143
		144	if (block_sig_level++)
		145	return;
		146
		147	if (!main_sig)
		148	return;
		149
		150	sigemptyset (&ss);
		151	sigaddset (&ss, main_sig);
		152	pthread_sigmask (SIG_BLOCK, &ss, 0);
		153	}
		154
		155	void unblock_sig ()
		156	{
		157	sigset_t ss;
		158
		159	if (--block_sig_level)
		160	return;
		161
		162	if (!main_sig)
		163	return;
		164
		165	sigemptyset (&ss);
		166	sigaddset (&ss, main_sig);
		167	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		168	}
		169
124	static int next_pri = DEFAULT_PRI + PRI_BIAS;	170	static int next_pri = DEFAULT_PRI + PRI_BIAS;
125		171
126	static int started, wanted;	172	static unsigned int started, idle, wanted;
127	static volatile int nreqs;	173
128	static int max_outstanding = 1<<30;	174	/* worker threads management */
		175	static mutex_t wrklock = MUTEX_INIT;
		176
		177	typedef struct worker {
		178	/* locked by wrklock */
		179	struct worker *prev, *next;
		180
		181	thread_t tid;
		182
		183	/* locked by reslock, reqlock or wrklock */
		184	aio_req req; /* currently processed request */
		185	void *dbuf;
		186	DIR *dirp;
		187	} worker;
		188
		189	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		190
		191	static void worker_clear (worker *wrk)
		192	{
		193	if (wrk->dirp)
		194	{
		195	closedir (wrk->dirp);
		196	wrk->dirp = 0;
		197	}
		198
		199	if (wrk->dbuf)
		200	{
		201	free (wrk->dbuf);
		202	wrk->dbuf = 0;
		203	}
		204	}
		205
		206	static void worker_free (worker *wrk)
		207	{
		208	wrk->next->prev = wrk->prev;
		209	wrk->prev->next = wrk->next;
		210
		211	free (wrk);
		212	}
		213
		214	static volatile unsigned int nreqs, nready, npending;
		215	static volatile unsigned int max_idle = 4;
		216	static volatile unsigned int max_outstanding = 0xffffffff;
129	static int respipe [2];	217	static int respipe [2];
130		218
131	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	219	static mutex_t reslock = MUTEX_INIT;
132	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	220	static mutex_t reqlock = MUTEX_INIT;
		221	static cond_t reqwait = COND_INIT;
		222
		223	#if WORDACCESS_UNSAFE
		224
		225	static unsigned int get_nready ()
		226	{
		227	unsigned int retval;
		228
		229	LOCK (reqlock);
		230	retval = nready;
		231	UNLOCK (reqlock);
		232
		233	return retval;
		234	}
		235
		236	static unsigned int get_npending ()
		237	{
		238	unsigned int retval;
		239
		240	LOCK (reslock);
		241	retval = npending;
		242	UNLOCK (reslock);
		243
		244	return retval;
		245	}
		246
		247	static unsigned int get_nthreads ()
		248	{
		249	unsigned int retval;
		250
		251	LOCK (wrklock);
		252	retval = started;
		253	UNLOCK (wrklock);
		254
		255	return retval;
		256	}
		257
133	#else	258	#else
134	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	259
		260	# define get_nready() nready
		261	# define get_npending() npending
		262	# define get_nthreads() started
		263
135	#endif	264	#endif
136		265
137	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	266	/*
138	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	267	* a somewhat faster data structure might be nice, but
139	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	268	* with 8 priorities this actually needs <20 insns
		269	* per shift, the most expensive operation.
		270	*/
		271	typedef struct {
		272	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		273	int size;
		274	} reqq;
140		275
141	static volatile aio_req reqs, reqe; /* queue start, queue end */	276	static reqq req_queue;
142	static volatile aio_req ress, rese; /* queue start, queue end */	277	static reqq res_queue;
143		278
		279	int reqq_push (reqq *q, aio_req req)
		280	{
		281	int pri = req->pri;
		282	req->next = 0;
		283
		284	if (q->qe[pri])
		285	{
		286	q->qe[pri]->next = req;
		287	q->qe[pri] = req;
		288	}
		289	else
		290	q->qe[pri] = q->qs[pri] = req;
		291
		292	return q->size++;
		293	}
		294
		295	aio_req reqq_shift (reqq *q)
		296	{
		297	int pri;
		298
		299	if (!q->size)
		300	return 0;
		301
		302	--q->size;
		303
		304	for (pri = NUM_PRI; pri--; )
		305	{
		306	aio_req req = q->qs[pri];
		307
		308	if (req)
		309	{
		310	if (!(q->qs[pri] = req->next))
		311	q->qe[pri] = 0;
		312
		313	return req;
		314	}
		315	}
		316
		317	abort ();
		318	}
		319
		320	static int poll_cb ();
144	static void req_invoke (aio_req req);	321	static int req_invoke (aio_req req);
145	static void req_free (aio_req req);	322	static void req_free (aio_req req);
		323	static void req_cancel (aio_req req);
146		324
147	/* must be called at most once */	325	/* must be called at most once */
148	static SV *req_sv (aio_req req, const char *klass)	326	static SV *req_sv (aio_req req, const char *klass)
149	{	327	{
150	if (!req->self)	328	if (!req->self)
…		…
168	return mg ? (aio_req)mg->mg_ptr : 0;	346	return mg ? (aio_req)mg->mg_ptr : 0;
169	}	347	}
170		348
171	static void aio_grp_feed (aio_req grp)	349	static void aio_grp_feed (aio_req grp)
172	{	350	{
		351	block_sig ();
		352
173	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
174	{	354	{
175	int old_len = grp->length;	355	int old_len = grp->size;
176		356
177	if (grp->fh2 && SvOK (grp->fh2))	357	if (grp->sv2 && SvOK (grp->sv2))
178	{	358	{
179	dSP;	359	dSP;
180		360
181	ENTER;	361	ENTER;
182	SAVETMPS;	362	SAVETMPS;
183	PUSHMARK (SP);	363	PUSHMARK (SP);
184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
185	PUTBACK;	365	PUTBACK;
186	call_sv (grp->fh2, G_VOID | G_EVAL);	366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
187	SPAGAIN;	367	SPAGAIN;
188	FREETMPS;	368	FREETMPS;
189	LEAVE;	369	LEAVE;
190	}	370	}
191		371
192	/* stop if no progress has been made */	372	/* stop if no progress has been made */
193	if (old_len == grp->length)	373	if (old_len == grp->size)
194	{	374	{
195	SvREFCNT_dec (grp->fh2);	375	SvREFCNT_dec (grp->sv2);
196	grp->fh2 = 0;	376	grp->sv2 = 0;
197	break;	377	break;
198	}	378	}
199	}	379	}
		380
		381	unblock_sig ();
200	}	382	}
201		383
202	static void aio_grp_dec (aio_req grp)	384	static void aio_grp_dec (aio_req grp)
203	{	385	{
204	--grp->length;	386	--grp->size;
205		387
206	/* call feeder, if applicable */	388	/* call feeder, if applicable */
207	aio_grp_feed (grp);	389	aio_grp_feed (grp);
208		390
209	/* finish, if done */	391	/* finish, if done */
210	if (!grp->length && grp->fd)	392	if (!grp->size && grp->int1)
211	{	393	{
		394	block_sig ();
		395
212	req_invoke (grp);	396	if (!req_invoke (grp))
		397	{
		398	req_free (grp);
		399	unblock_sig ();
		400	croak (0);
		401	}
		402
213	req_free (grp);	403	req_free (grp);
		404	unblock_sig ();
214	}	405	}
215	}	406	}
216		407
217	static void poll_wait ()	408	static int req_invoke (aio_req req)
218	{	409	{
219	fd_set rfd;	410	dSP;
220		411
221	while (nreqs)	412	if (req->flags & FLAG_SV2_RO_OFF)
		413	SvREADONLY_off (req->sv2);
		414
		415	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
222	{	416	{
223	aio_req req;	417	ENTER;
224	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */	418	SAVETMPS;
225	pthread_mutex_lock (&reslock);	419	PUSHMARK (SP);
226	#endif	420	EXTEND (SP, 1);
227	req = ress;
228	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
229	pthread_mutex_unlock (&reslock);
230	#endif
231		421
232	if (req)	422	switch (req->type)
233	return;	423	{
		424	case REQ_READDIR:
		425	{
		426	SV *rv = &PL_sv_undef;
234		427
235	FD_ZERO(&rfd);	428	if (req->result >= 0)
236	FD_SET(respipe [0], &rfd);	429	{
		430	int i;
		431	char *buf = req->ptr2;
		432	AV *av = newAV ();
237		433
238	select (respipe [0] + 1, &rfd, 0, 0, 0);	434	av_extend (av, req->result - 1);
		435
		436	for (i = 0; i < req->result; ++i)
		437	{
		438	SV *sv = newSVpv (buf, 0);
		439
		440	av_store (av, i, sv);
		441	buf += SvCUR (sv) + 1;
		442	}
		443
		444	rv = sv_2mortal (newRV_noinc ((SV *)av));
		445	}
		446
		447	PUSHs (rv);
		448	}
		449	break;
		450
		451	case REQ_OPEN:
		452	{
		453	/* convert fd to fh */
		454	SV *fh;
		455
		456	PUSHs (sv_2mortal (newSViv (req->result)));
		457	PUTBACK;
		458	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		459	SPAGAIN;
		460
		461	fh = POPs;
		462	PUSHMARK (SP);
		463	XPUSHs (fh);
		464	}
		465	break;
		466
		467	case REQ_GROUP:
		468	req->int1 = 2; /* mark group as finished */
		469
		470	if (req->sv1)
		471	{
		472	int i;
		473	AV *av = (AV *)req->sv1;
		474
		475	EXTEND (SP, AvFILL (av) + 1);
		476	for (i = 0; i <= AvFILL (av); ++i)
		477	PUSHs (*av_fetch (av, i, 0));
		478	}
		479	break;
		480
		481	case REQ_NOP:
		482	case REQ_BUSY:
		483	break;
		484
		485	case REQ_READLINK:
		486	if (req->result > 0)
		487	{
		488	SvCUR_set (req->sv2, req->result);
		489	*SvEND (req->sv2) = 0;
		490	PUSHs (req->sv2);
		491	}
		492	break;
		493
		494	case REQ_STAT:
		495	case REQ_LSTAT:
		496	case REQ_FSTAT:
		497	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		498	PL_laststatval = req->result;
		499	PL_statcache = *(Stat_t *)(req->ptr2);
		500	PUSHs (sv_2mortal (newSViv (req->result)));
		501	break;
		502
		503	case REQ_READ:
		504	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		505	*SvEND (req->sv2) = 0;
		506	PUSHs (sv_2mortal (newSViv (req->result)));
		507	break;
		508
		509	default:
		510	PUSHs (sv_2mortal (newSViv (req->result)));
		511	break;
		512	}
		513
		514	errno = req->errorno;
		515
		516	PUTBACK;
		517	call_sv (req->callback, G_VOID | G_EVAL);
		518	SPAGAIN;
		519
		520	FREETMPS;
		521	LEAVE;
239	}	522	}
240	}
241		523
242	static void req_invoke (aio_req req)
243	{
244	dSP;
245	int errorno = errno;
246
247	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))
248	return;
249
250	errno = req->errorno;
251
252	ENTER;
253	SAVETMPS;
254	PUSHMARK (SP);
255	EXTEND (SP, 1);
256
257	switch (req->type)
258	{
259	case REQ_READDIR:
260	{
261	SV *rv = &PL_sv_undef;
262
263	if (req->result >= 0)
264	{
265	char *buf = req->data2ptr;
266	AV *av = newAV ();
267
268	while (req->result)
269	{
270	SV *sv = newSVpv (buf, 0);
271
272	av_push (av, sv);
273	buf += SvCUR (sv) + 1;
274	req->result--;
275	}
276
277	rv = sv_2mortal (newRV_noinc ((SV *)av));
278	}
279
280	PUSHs (rv);
281	}
282	break;
283
284	case REQ_OPEN:
285	{
286	/* convert fd to fh */
287	SV *fh;
288
289	PUSHs (sv_2mortal (newSViv (req->result)));
290	PUTBACK;
291	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
292	SPAGAIN;
293
294	fh = SvREFCNT_inc (POPs);
295
296	PUSHMARK (SP);
297	XPUSHs (sv_2mortal (fh));
298	}
299	break;
300
301	case REQ_GROUP:
302	req->fd = 2; /* mark group as finished */
303
304	if (req->data)
305	{
306	int i;
307	AV *av = (AV *)req->data;
308
309	EXTEND (SP, AvFILL (av) + 1);
310	for (i = 0; i <= AvFILL (av); ++i)
311	PUSHs (*av_fetch (av, i, 0));
312	}
313	break;
314
315	case REQ_NOP:
316	case REQ_SLEEP:
317	break;
318
319	default:
320	PUSHs (sv_2mortal (newSViv (req->result)));
321	break;
322	}
323
324
325	PUTBACK;
326	call_sv (req->callback, G_VOID | G_EVAL);
327	SPAGAIN;
328
329	FREETMPS;
330	LEAVE;
331
332	errno = errorno;
333
334	if (SvTRUE (ERRSV))
335	{
336	req_free (req);
337	croak (0);
338	}
339	}
340
341	static void req_free (aio_req req)
342	{
343	if (req->grp)	524	if (req->grp)
344	{	525	{
345	aio_req grp = req->grp;	526	aio_req grp = req->grp;
346		527
347	/* unlink request */	528	/* unlink request */
…		…
352	grp->grp_first = req->grp_next;	533	grp->grp_first = req->grp_next;
353		534
354	aio_grp_dec (grp);	535	aio_grp_dec (grp);
355	}	536	}
356		537
		538	return !SvTRUE (ERRSV);
		539	}
		540
		541	static void req_free (aio_req req)
		542	{
357	if (req->self)	543	if (req->self)
358	{	544	{
359	sv_unmagic (req->self, PERL_MAGIC_ext);	545	sv_unmagic (req->self, PERL_MAGIC_ext);
360	SvREFCNT_dec (req->self);	546	SvREFCNT_dec (req->self);
361	}	547	}
362		548
363	SvREFCNT_dec (req->data);
364	SvREFCNT_dec (req->fh);	549	SvREFCNT_dec (req->sv1);
365	SvREFCNT_dec (req->fh2);	550	SvREFCNT_dec (req->sv2);
366	SvREFCNT_dec (req->callback);	551	SvREFCNT_dec (req->callback);
367	Safefree (req->statdata);
368		552
369	if (req->type == REQ_READDIR && req->result >= 0)	553	if (req->flags & FLAG_PTR2_FREE)
370	free (req->data2ptr);	554	free (req->ptr2);
371		555
372	Safefree (req);	556	Safefree (req);
373	}	557	}
374		558
		559	static void req_cancel_subs (aio_req grp)
		560	{
		561	aio_req sub;
		562
		563	if (grp->type != REQ_GROUP)
		564	return;
		565
		566	SvREFCNT_dec (grp->sv2);
		567	grp->sv2 = 0;
		568
		569	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		570	req_cancel (sub);
		571	}
		572
375	static void req_cancel (aio_req req)	573	static void req_cancel (aio_req req)
376	{	574	{
377	req->flags |= FLAG_CANCELLED;	575	req->flags |= FLAG_CANCELLED;
378		576
379	if (req->type == REQ_GROUP)	577	req_cancel_subs (req);
		578	}
		579
		580	static void *aio_proc(void *arg);
		581
		582	static void start_thread (void)
		583	{
		584	worker *wrk = calloc (1, sizeof (worker));
		585
		586	if (!wrk)
		587	croak ("unable to allocate worker thread data");
		588
		589	LOCK (wrklock);
		590
		591	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
380	{	592	{
381	aio_req sub;	593	wrk->prev = &wrk_first;
		594	wrk->next = wrk_first.next;
		595	wrk_first.next->prev = wrk;
		596	wrk_first.next = wrk;
		597	++started;
		598	}
		599	else
		600	free (wrk);
382		601
383	for (sub = req->grp_first; sub; sub = sub->grp_next)	602	UNLOCK (wrklock);
384	req_cancel (sub);	603	}
		604
		605	static void maybe_start_thread ()
		606	{
		607	if (get_nthreads () >= wanted)
		608	return;
		609
		610	/* todo: maybe use idle here, but might be less exact */
		611	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		612	return;
		613
		614	start_thread ();
		615	}
		616
		617	static void req_send (aio_req req)
		618	{
		619	block_sig ();
		620
		621	++nreqs;
		622
		623	LOCK (reqlock);
		624	++nready;
		625	reqq_push (&req_queue, req);
		626	COND_SIGNAL (reqwait);
		627	UNLOCK (reqlock);
		628
		629	unblock_sig ();
		630
		631	maybe_start_thread ();
		632	}
		633
		634	static void end_thread (void)
		635	{
		636	aio_req req;
		637
		638	Newz (0, req, 1, aio_cb);
		639
		640	req->type = REQ_QUIT;
		641	req->pri = PRI_MAX + PRI_BIAS;
		642
		643	LOCK (reqlock);
		644	reqq_push (&req_queue, req);
		645	COND_SIGNAL (reqwait);
		646	UNLOCK (reqlock);
		647
		648	LOCK (wrklock);
		649	--started;
		650	UNLOCK (wrklock);
		651	}
		652
		653	static void set_max_idle (int nthreads)
		654	{
		655	if (WORDACCESS_UNSAFE) LOCK (reqlock);
		656	max_idle = nthreads <= 0 ? 1 : nthreads;
		657	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
		658	}
		659
		660	static void min_parallel (int nthreads)
		661	{
		662	if (wanted < nthreads)
		663	wanted = nthreads;
		664	}
		665
		666	static void max_parallel (int nthreads)
		667	{
		668	if (wanted > nthreads)
		669	wanted = nthreads;
		670
		671	while (started > wanted)
		672	end_thread ();
		673	}
		674
		675	static void poll_wait ()
		676	{
		677	fd_set rfd;
		678
		679	while (nreqs)
		680	{
		681	int size;
		682	if (WORDACCESS_UNSAFE) LOCK (reslock);
		683	size = res_queue.size;
		684	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		685
		686	if (size)
		687	return;
		688
		689	maybe_start_thread ();
		690
		691	FD_ZERO(&rfd);
		692	FD_SET(respipe [0], &rfd);
		693
		694	select (respipe [0] + 1, &rfd, 0, 0, 0);
385	}	695	}
386	}	696	}
387		697
388	static int poll_cb ()	698	static int poll_cb ()
389	{	699	{
390	dSP;	700	dSP;
391	int count = 0;	701	int count = 0;
		702	int maxreqs = max_poll_reqs;
392	int do_croak = 0;	703	int do_croak = 0;
		704	struct timeval tv_start, tv_now;
393	aio_req req;	705	aio_req req;
		706
		707	if (max_poll_time)
		708	gettimeofday (&tv_start, 0);
		709
		710	block_sig ();
394		711
395	for (;;)	712	for (;;)
396	{	713	{
397	pthread_mutex_lock (&reslock);	714	for (;;)
398	req = ress;
399
400	if (req)
401	{	715	{
402	ress = req->next;	716	maybe_start_thread ();
403		717
		718	LOCK (reslock);
		719	req = reqq_shift (&res_queue);
		720
404	if (!ress)	721	if (req)
405	{	722	{
		723	--npending;
		724
		725	if (!res_queue.size)
		726	{
406	/* read any signals sent by the worker threads */	727	/* read any signals sent by the worker threads */
407	char buf [32];	728	char buf [4];
408	while (read (respipe [0], buf, 32) == 32)	729	while (read (respipe [0], buf, 4) == 4)
		730	;
409	;	731	}
		732	}
410		733
		734	UNLOCK (reslock);
		735
		736	if (!req)
		737	break;
		738
		739	--nreqs;
		740
		741	if (req->type == REQ_GROUP && req->size)
		742	{
		743	req->int1 = 1; /* mark request as delayed */
		744	continue;
		745	}
		746	else
		747	{
		748	if (!req_invoke (req))
		749	{
		750	req_free (req);
		751	unblock_sig ();
		752	croak (0);
		753	}
		754
		755	count++;
		756	}
		757
		758	req_free (req);
		759
		760	if (maxreqs && !--maxreqs)
		761	break;
		762
		763	if (max_poll_time)
		764	{
		765	gettimeofday (&tv_now, 0);
		766
		767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
411	rese = 0;	768	break;
412	}	769	}
413	}	770	}
414		771
415	pthread_mutex_unlock (&reslock);	772	if (nreqs <= max_outstanding)
416
417	if (!req)
418	break;	773	break;
419		774
420	--nreqs;	775	poll_wait ();
421		776
422	if (req->type == REQ_QUIT)	777	++maxreqs;
423	started--;
424	else if (req->type == REQ_GROUP && req->length)
425	{
426	req->fd = 1; /* mark request as delayed */
427	continue;
428	}
429	else
430	{
431	if (req->type == REQ_READ)
432	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
433
434	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
435	SvREADONLY_off (req->data);
436
437	if (req->statdata)
438	{
439	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
440	PL_laststatval = req->result;
441	PL_statcache = *(req->statdata);
442	}
443
444	req_invoke (req);
445
446	count++;
447	}
448
449	req_free (req);
450	}	778	}
451		779
		780	unblock_sig ();
452	return count;	781	return count;
453	}
454
455	static void *aio_proc(void *arg);
456
457	static void start_thread (void)
458	{
459	sigset_t fullsigset, oldsigset;
460	pthread_t tid;
461	pthread_attr_t attr;
462
463	pthread_attr_init (&attr);
464	pthread_attr_setstacksize (&attr, STACKSIZE);
465	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
466
467	sigfillset (&fullsigset);
468	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
469
470	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
471	started++;
472
473	sigprocmask (SIG_SETMASK, &oldsigset, 0);
474	}
475
476	static void req_send (aio_req req)
477	{
478	while (started < wanted && nreqs >= started)
479	start_thread ();
480
481	++nreqs;
482
483	pthread_mutex_lock (&reqlock);
484
485	req->next = 0;
486
487	if (reqe)
488	{
489	reqe->next = req;
490	reqe = req;
491	}
492	else
493	reqe = reqs = req;
494
495	pthread_cond_signal (&reqwait);
496	pthread_mutex_unlock (&reqlock);
497
498	if (nreqs > max_outstanding)
499	for (;;)
500	{
501	poll_cb ();
502
503	if (nreqs <= max_outstanding)
504	break;
505
506	poll_wait ();
507	}
508	}
509
510	static void end_thread (void)
511	{
512	aio_req req;
513	Newz (0, req, 1, aio_cb);
514	req->type = REQ_QUIT;
515
516	req_send (req);
517	}
518
519	static void min_parallel (int nthreads)
520	{
521	if (wanted < nthreads)
522	wanted = nthreads;
523	}
524
525	static void max_parallel (int nthreads)
526	{
527	int cur = started;
528
529	if (wanted > nthreads)
530	wanted = nthreads;
531
532	while (cur > wanted)
533	{
534	end_thread ();
535	cur--;
536	}
537
538	while (started > wanted)
539	{
540	poll_wait ();
541	poll_cb ();
542	}
543	}	782	}
544		783
545	static void create_pipe ()	784	static void create_pipe ()
546	{	785	{
547	if (pipe (respipe))	786	if (pipe (respipe))
…		…
564	/*	803	/*
565	* make our pread/pwrite safe against themselves, but not against	804	* make our pread/pwrite safe against themselves, but not against
566	* normal read/write by using a mutex. slows down execution a lot,	805	* normal read/write by using a mutex. slows down execution a lot,
567	* but that's your problem, not mine.	806	* but that's your problem, not mine.
568	*/	807	*/
569	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	808	static mutex_t preadwritelock = MUTEX_INIT;
570		809
571	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	810	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
572	{	811	{
573	ssize_t res;	812	ssize_t res;
574	off_t ooffset;	813	off_t ooffset;
575		814
576	pthread_mutex_lock (&preadwritelock);	815	LOCK (preadwritelock);
577	ooffset = lseek (fd, 0, SEEK_CUR);	816	ooffset = lseek (fd, 0, SEEK_CUR);
578	lseek (fd, offset, SEEK_SET);	817	lseek (fd, offset, SEEK_SET);
579	res = read (fd, buf, count);	818	res = read (fd, buf, count);
580	lseek (fd, ooffset, SEEK_SET);	819	lseek (fd, ooffset, SEEK_SET);
581	pthread_mutex_unlock (&preadwritelock);	820	UNLOCK (preadwritelock);
582		821
583	return res;	822	return res;
584	}	823	}
585		824
586	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	825	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
587	{	826	{
588	ssize_t res;	827	ssize_t res;
589	off_t ooffset;	828	off_t ooffset;
590		829
591	pthread_mutex_lock (&preadwritelock);	830	LOCK (preadwritelock);
592	ooffset = lseek (fd, 0, SEEK_CUR);	831	ooffset = lseek (fd, 0, SEEK_CUR);
593	lseek (fd, offset, SEEK_SET);	832	lseek (fd, offset, SEEK_SET);
594	res = write (fd, buf, count);	833	res = write (fd, buf, count);
595	lseek (fd, offset, SEEK_SET);	834	lseek (fd, offset, SEEK_SET);
596	pthread_mutex_unlock (&preadwritelock);	835	UNLOCK (preadwritelock);
597		836
598	return res;	837	return res;
599	}	838	}
		839	#endif
		840
		841	#ifndef HAVE_FUTIMES
		842
		843	# define utimes(path,times) aio_utimes (path, times)
		844	# define futimes(fd,times) aio_futimes (fd, times)
		845
		846	int aio_utimes (const char *filename, const struct timeval times[2])
		847	{
		848	if (times)
		849	{
		850	struct utimbuf buf;
		851
		852	buf.actime = times[0].tv_sec;
		853	buf.modtime = times[1].tv_sec;
		854
		855	return utime (filename, &buf);
		856	}
		857	else
		858	return utime (filename, 0);
		859	}
		860
		861	int aio_futimes (int fd, const struct timeval tv[2])
		862	{
		863	errno = ENOSYS;
		864	return -1;
		865	}
		866
600	#endif	867	#endif
601		868
602	#if !HAVE_FDATASYNC	869	#if !HAVE_FDATASYNC
603	# define fdatasync fsync	870	# define fdatasync fsync
604	#endif	871	#endif
605		872
606	#if !HAVE_READAHEAD	873	#if !HAVE_READAHEAD
607	# define readahead aio_readahead	874	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
608		875
609	static ssize_t readahead (int fd, off_t offset, size_t count)	876	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
610	{	877	{
611	dBUF;	878	dBUF;
612		879
613	while (count > 0)	880	while (count > 0)
614	{	881	{
…		…
617	pread (fd, aio_buf, len, offset);	884	pread (fd, aio_buf, len, offset);
618	offset += len;	885	offset += len;
619	count -= len;	886	count -= len;
620	}	887	}
621		888
622	fBUF;
623
624	errno = 0;	889	errno = 0;
625	}	890	}
		891
626	#endif	892	#endif
627		893
628	#if !HAVE_READDIR_R	894	#if !HAVE_READDIR_R
629	# define readdir_r aio_readdir_r	895	# define readdir_r aio_readdir_r
630		896
631	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	897	static mutex_t readdirlock = MUTEX_INIT;
632		898
633	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	899	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
634	{	900	{
635	struct dirent *e;	901	struct dirent *e;
636	int errorno;	902	int errorno;
637		903
638	pthread_mutex_lock (&readdirlock);	904	LOCK (readdirlock);
639		905
640	e = readdir (dirp);	906	e = readdir (dirp);
641	errorno = errno;	907	errorno = errno;
642		908
643	if (e)	909	if (e)
…		…
646	strcpy (ent->d_name, e->d_name);	912	strcpy (ent->d_name, e->d_name);
647	}	913	}
648	else	914	else
649	*res = 0;	915	*res = 0;
650		916
651	pthread_mutex_unlock (&readdirlock);	917	UNLOCK (readdirlock);
652		918
653	errno = errorno;	919	errno = errorno;
654	return e ? 0 : -1;	920	return e ? 0 : -1;
655	}	921	}
656	#endif	922	#endif
657		923
658	/* sendfile always needs emulation */	924	/* sendfile always needs emulation */
659	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	925	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
660	{	926	{
661	ssize_t res;	927	ssize_t res;
662		928
663	if (!count)	929	if (!count)
664	return 0;	930	return 0;
…		…
675	{	941	{
676	off_t sbytes;	942	off_t sbytes;
677	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	943	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
678		944
679	if (res < 0 && sbytes)	945	if (res < 0 && sbytes)
680	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	946	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
681	res = sbytes;	947	res = sbytes;
682	}	948	}
683		949
684	# elif __hpux	950	# elif __hpux
685	res = sendfile (ofd, ifd, offset, count, 0, 0);	951	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
741		1007
742	offset += cnt;	1008	offset += cnt;
743	res += cnt;	1009	res += cnt;
744	count -= cnt;	1010	count -= cnt;
745	}	1011	}
746
747	fBUF;
748	}	1012	}
749		1013
750	return res;	1014	return res;
751	}	1015	}
752		1016
753	/* read a full directory */	1017	/* read a full directory */
754	static int scandir_ (const char *path, void **namesp)	1018	static void scandir_ (aio_req req, worker *self)
755	{	1019	{
756	DIR *dirp;	1020	DIR *dirp;
757	union	1021	union
758	{	1022	{
759	struct dirent d;	1023	struct dirent d;
…		…
764	int memlen = 4096;	1028	int memlen = 4096;
765	int memofs = 0;	1029	int memofs = 0;
766	int res = 0;	1030	int res = 0;
767	int errorno;	1031	int errorno;
768		1032
769	dirp = opendir (path);	1033	LOCK (wrklock);
770	if (!dirp)	1034	self->dirp = dirp = opendir (req->ptr1);
771	return -1;
772
773	u = malloc (sizeof (*u));	1035	self->dbuf = u = malloc (sizeof (*u));
		1036	req->flags |= FLAG_PTR2_FREE;
774	names = malloc (memlen);	1037	req->ptr2 = names = malloc (memlen);
		1038	UNLOCK (wrklock);
775		1039
776	if (u && names)	1040	if (dirp && u && names)
777	for (;;)	1041	for (;;)
778	{	1042	{
779	errno = 0;	1043	errno = 0;
780	readdir_r (dirp, &u->d, &entp);	1044	readdir_r (dirp, &u->d, &entp);
781		1045
…		…
791	res++;	1055	res++;
792		1056
793	while (memofs + len > memlen)	1057	while (memofs + len > memlen)
794	{	1058	{
795	memlen *= 2;	1059	memlen *= 2;
		1060	LOCK (wrklock);
796	names = realloc (names, memlen);	1061	req->ptr2 = names = realloc (names, memlen);
		1062	UNLOCK (wrklock);
		1063
797	if (!names)	1064	if (!names)
798	break;	1065	break;
799	}	1066	}
800		1067
801	memcpy (names + memofs, name, len);	1068	memcpy (names + memofs, name, len);
802	memofs += len;	1069	memofs += len;
803	}	1070	}
804	}	1071	}
805		1072
806	errorno = errno;
807	free (u);
808	closedir (dirp);
809
810	if (errorno)	1073	if (errno)
		1074	res = -1;
		1075
		1076	req->result = res;
		1077	}
		1078
		1079	/*****************************************************************************/
		1080
		1081	static void *aio_proc (void *thr_arg)
		1082	{
		1083	aio_req req;
		1084	struct timespec ts;
		1085	worker *self = (worker *)thr_arg;
		1086
		1087	/* try to distribute timeouts somewhat evenly */
		1088	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1089	* (1000000000UL / 1024UL);
		1090
		1091	for (;;)
811	{	1092	{
812	free (names);	1093	ts.tv_sec = time (0) + IDLE_TIMEOUT;
813	errno = errorno;
814	res = -1;
815	}
816		1094
817	*namesp = (void *)names;	1095	LOCK (reqlock);
818	return res;
819	}
820
821	/*****************************************************************************/
822
823	static void *aio_proc (void *thr_arg)
824	{
825	aio_req req;
826	int type;
827
828	do
829	{
830	pthread_mutex_lock (&reqlock);
831		1096
832	for (;;)	1097	for (;;)
833	{	1098	{
834	req = reqs;	1099	self->req = req = reqq_shift (&req_queue);
835
836	if (reqs)
837	{
838	reqs = reqs->next;
839	if (!reqs) reqe = 0;
840	}
841		1100
842	if (req)	1101	if (req)
843	break;	1102	break;
844		1103
845	pthread_cond_wait (&reqwait, &reqlock);	1104	++idle;
		1105
		1106	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
		1107	== ETIMEDOUT)
		1108	{
		1109	if (idle > max_idle)
		1110	{
		1111	--idle;
		1112	UNLOCK (reqlock);
		1113	LOCK (wrklock);
		1114	--started;
		1115	UNLOCK (wrklock);
		1116	goto quit;
		1117	}
		1118
		1119	/* we are allowed to idle, so do so without any timeout */
		1120	COND_WAIT (reqwait, reqlock);
		1121	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1122	}
		1123
		1124	--idle;
846	}	1125	}
847		1126
848	pthread_mutex_unlock (&reqlock);	1127	--nready;
		1128
		1129	UNLOCK (reqlock);
849		1130
850	errno = 0; /* strictly unnecessary */	1131	errno = 0; /* strictly unnecessary */
851	type = req->type; /* remember type for QUIT check */
852		1132
853	if (!(req->flags & FLAG_CANCELLED))	1133	if (!(req->flags & FLAG_CANCELLED))
854	switch (type)	1134	switch (req->type)
855	{	1135	{
856	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1136	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
857	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1137	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
858		1138
859	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1139	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
860	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1140	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
861		1141
862	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1142	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
863	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1143	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
864	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1144	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
865		1145
		1146	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1147	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1148	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1149	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1150
866	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1151	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
867	case REQ_CLOSE: req->result = close (req->fd); break;	1152	case REQ_CLOSE: req->result = close (req->int1); break;
868	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1153	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
869	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1154	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1155	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
870	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1156	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
871	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1157	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
872	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1158	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1159	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1160	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
873		1161
874	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1162	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
875	case REQ_FSYNC: req->result = fsync (req->fd); break;	1163	case REQ_FSYNC: req->result = fsync (req->int1); break;
876	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1164	case REQ_READDIR: scandir_ (req, self); break;
877		1165
878	case REQ_SLEEP:	1166	case REQ_BUSY:
879	{	1167	{
880	struct timeval tv;	1168	struct timeval tv;
881		1169
882	tv.tv_sec = req->fd;	1170	tv.tv_sec = req->nv1;
883	tv.tv_usec = req->fd2;	1171	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
884		1172
885	req->result = select (0, 0, 0, 0, &tv);	1173	req->result = select (0, 0, 0, 0, &tv);
886	}	1174	}
887		1175
		1176	case REQ_UTIME:
		1177	case REQ_FUTIME:
		1178	{
		1179	struct timeval tv[2];
		1180	struct timeval *times;
		1181
		1182	if (req->nv1 != -1. || req->nv2 != -1.)
		1183	{
		1184	tv[0].tv_sec = req->nv1;
		1185	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1186	tv[1].tv_sec = req->nv2;
		1187	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1188
		1189	times = tv;
		1190	}
		1191	else
		1192	times = 0;
		1193
		1194
		1195	req->result = req->type == REQ_FUTIME
		1196	? futimes (req->int1, times)
		1197	: utimes (req->ptr1, times);
		1198	}
		1199
888	case REQ_GROUP:	1200	case REQ_GROUP:
889	case REQ_NOP:	1201	case REQ_NOP:
		1202	break;
		1203
890	case REQ_QUIT:	1204	case REQ_QUIT:
891	break;	1205	goto quit;
892		1206
893	default:	1207	default:
894	req->result = ENOSYS;	1208	req->result = -1;
895	break;	1209	break;
896	}	1210	}
897		1211
898	req->errorno = errno;	1212	req->errorno = errno;
899		1213
900	pthread_mutex_lock (&reslock);	1214	LOCK (reslock);
901		1215
902	req->next = 0;	1216	++npending;
903		1217
904	if (rese)	1218	if (!reqq_push (&res_queue, req))
905	{	1219	{
906	rese->next = req;
907	rese = req;
908	}
909	else
910	{
911	rese = ress = req;
912
913	/* write a dummy byte to the pipe so fh becomes ready */	1220	/* write a dummy byte to the pipe so fh becomes ready */
914	write (respipe [1], &respipe, 1);	1221	write (respipe [1], &respipe, 1);
		1222
		1223	/* optionally signal the main thread asynchronously */
		1224	if (main_sig)
		1225	pthread_kill (main_tid, main_sig);
915	}	1226	}
916		1227
917	pthread_mutex_unlock (&reslock);	1228	self->req = 0;
		1229	worker_clear (self);
		1230
		1231	UNLOCK (reslock);
918	}	1232	}
919	while (type != REQ_QUIT);	1233
		1234	quit:
		1235	LOCK (wrklock);
		1236	worker_free (self);
		1237	UNLOCK (wrklock);
920		1238
921	return 0;	1239	return 0;
922	}	1240	}
923		1241
924	/*****************************************************************************/	1242	/*****************************************************************************/
925		1243
926	static void atfork_prepare (void)	1244	static void atfork_prepare (void)
927	{	1245	{
928	pthread_mutex_lock (&reqlock);	1246	LOCK (wrklock);
929	pthread_mutex_lock (&reslock);	1247	LOCK (reqlock);
		1248	LOCK (reslock);
930	#if !HAVE_PREADWRITE	1249	#if !HAVE_PREADWRITE
931	pthread_mutex_lock (&preadwritelock);	1250	LOCK (preadwritelock);
932	#endif	1251	#endif
933	#if !HAVE_READDIR_R	1252	#if !HAVE_READDIR_R
934	pthread_mutex_lock (&readdirlock);	1253	LOCK (readdirlock);
935	#endif	1254	#endif
936	}	1255	}
937		1256
938	static void atfork_parent (void)	1257	static void atfork_parent (void)
939	{	1258	{
940	#if !HAVE_READDIR_R	1259	#if !HAVE_READDIR_R
941	pthread_mutex_unlock (&readdirlock);	1260	UNLOCK (readdirlock);
942	#endif	1261	#endif
943	#if !HAVE_PREADWRITE	1262	#if !HAVE_PREADWRITE
944	pthread_mutex_unlock (&preadwritelock);	1263	UNLOCK (preadwritelock);
945	#endif	1264	#endif
946	pthread_mutex_unlock (&reslock);	1265	UNLOCK (reslock);
947	pthread_mutex_unlock (&reqlock);	1266	UNLOCK (reqlock);
		1267	UNLOCK (wrklock);
948	}	1268	}
949		1269
950	static void atfork_child (void)	1270	static void atfork_child (void)
951	{	1271	{
952	aio_req prv;	1272	aio_req prv;
953		1273
954	started = 0;	1274	while (prv = reqq_shift (&req_queue))
		1275	req_free (prv);
955		1276
956	while (reqs)	1277	while (prv = reqq_shift (&res_queue))
		1278	req_free (prv);
		1279
		1280	while (wrk_first.next != &wrk_first)
957	{	1281	{
958	prv = reqs;	1282	worker *wrk = wrk_first.next;
959	reqs = prv->next;	1283
		1284	if (wrk->req)
		1285	req_free (wrk->req);
		1286
		1287	worker_clear (wrk);
960	req_free (prv);	1288	worker_free (wrk);
961	}	1289	}
962		1290
963	reqs = reqe = 0;	1291	started = 0;
964		1292	idle = 0;
965	while (ress)	1293	nreqs = 0;
966	{	1294	nready = 0;
967	prv = ress;	1295	npending = 0;
968	ress = prv->next;
969	req_free (prv);
970	}
971
972	ress = rese = 0;
973		1296
974	close (respipe [0]);	1297	close (respipe [0]);
975	close (respipe [1]);	1298	close (respipe [1]);
976	create_pipe ();	1299	create_pipe ();
977		1300
…		…
1004	PROTOTYPES: ENABLE	1327	PROTOTYPES: ENABLE
1005		1328
1006	BOOT:	1329	BOOT:
1007	{	1330	{
1008	HV *stash = gv_stashpv ("IO::AIO", 1);	1331	HV *stash = gv_stashpv ("IO::AIO", 1);
		1332
1009	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1333	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1010	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1334	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1011	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1335	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1336	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1337	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1338	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1339	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1012		1340
1013	create_pipe ();	1341	create_pipe ();
1014	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1342	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1015	}	1343	}
1016		1344
1017	void	1345	void
1018	min_parallel (nthreads)	1346	max_poll_reqs (int nreqs)
1019	int nthreads
1020	PROTOTYPE: $	1347	PROTOTYPE: $
		1348	CODE:
		1349	max_poll_reqs = nreqs;
1021		1350
1022	void	1351	void
1023	max_parallel (nthreads)	1352	max_poll_time (double nseconds)
1024	int nthreads
1025	PROTOTYPE: $	1353	PROTOTYPE: $
		1354	CODE:
		1355	max_poll_time = nseconds * AIO_TICKS;
		1356
		1357	void
		1358	min_parallel (int nthreads)
		1359	PROTOTYPE: $
		1360
		1361	void
		1362	max_parallel (int nthreads)
		1363	PROTOTYPE: $
		1364
		1365	void
		1366	max_idle (int nthreads)
		1367	PROTOTYPE: $
		1368	CODE:
		1369	set_max_idle (nthreads);
1026		1370
1027	int	1371	int
1028	max_outstanding (nreqs)	1372	max_outstanding (int maxreqs)
1029	int nreqs	1373	PROTOTYPE: $
1030	PROTOTYPE: $
1031	CODE:	1374	CODE:
1032	RETVAL = max_outstanding;	1375	RETVAL = max_outstanding;
1033	max_outstanding = nreqs;	1376	max_outstanding = maxreqs;
		1377	OUTPUT:
		1378	RETVAL
1034		1379
1035	void	1380	void
1036	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1381	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1037	SV * pathname
1038	int flags
1039	int mode
1040	SV * callback
1041	PROTOTYPE: $$$;$	1382	PROTOTYPE: $$$;$
1042	PPCODE:	1383	PPCODE:
1043	{	1384	{
1044	dREQ;	1385	dREQ;
1045		1386
1046	req->type = REQ_OPEN;	1387	req->type = REQ_OPEN;
1047	req->data = newSVsv (pathname);	1388	req->sv1 = newSVsv (pathname);
1048	req->dataptr = SvPVbyte_nolen (req->data);	1389	req->ptr1 = SvPVbyte_nolen (req->sv1);
1049	req->fd = flags;	1390	req->int1 = flags;
1050	req->mode = mode;	1391	req->mode = mode;
1051		1392
1052	REQ_SEND;	1393	REQ_SEND;
1053	}	1394	}
1054		1395
1055	void	1396	void
1056	aio_close (fh,callback=&PL_sv_undef)	1397	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1057	SV * fh
1058	SV * callback
1059	PROTOTYPE: $;$	1398	PROTOTYPE: $;$
1060	ALIAS:	1399	ALIAS:
1061	aio_close = REQ_CLOSE	1400	aio_close = REQ_CLOSE
1062	aio_fsync = REQ_FSYNC	1401	aio_fsync = REQ_FSYNC
1063	aio_fdatasync = REQ_FDATASYNC	1402	aio_fdatasync = REQ_FDATASYNC
1064	PPCODE:	1403	PPCODE:
1065	{	1404	{
1066	dREQ;	1405	dREQ;
1067		1406
1068	req->type = ix;	1407	req->type = ix;
1069	req->fh = newSVsv (fh);	1408	req->sv1 = newSVsv (fh);
1070	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1409	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1071		1410
1072	REQ_SEND (req);	1411	REQ_SEND (req);
1073	}	1412	}
1074		1413
1075	void	1414	void
1076	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1415	aio_read (SV *fh, UV offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)
1077	SV * fh
1078	UV offset
1079	UV length
1080	SV * data
1081	UV dataoffset
1082	SV * callback
1083	ALIAS:	1416	ALIAS:
1084	aio_read = REQ_READ	1417	aio_read = REQ_READ
1085	aio_write = REQ_WRITE	1418	aio_write = REQ_WRITE
1086	PROTOTYPE: $$$$$;$	1419	PROTOTYPE: $$$$$;$
1087	PPCODE:	1420	PPCODE:
1088	{	1421	{
1089	aio_req req;
1090	STRLEN svlen;	1422	STRLEN svlen;
1091	char *svptr = SvPVbyte (data, svlen);	1423	char *svptr = SvPVbyte (data, svlen);
1092		1424
1093	SvUPGRADE (data, SVt_PV);	1425	SvUPGRADE (data, SVt_PV);
1094	SvPOK_on (data);	1426	SvPOK_on (data);
…		…
1106	length = svlen - dataoffset;	1438	length = svlen - dataoffset;
1107	}	1439	}
1108	else	1440	else
1109	{	1441	{
1110	/* read: grow scalar as necessary */	1442	/* read: grow scalar as necessary */
1111	svptr = SvGROW (data, length + dataoffset);	1443	svptr = SvGROW (data, length + dataoffset + 1);
1112	}	1444	}
1113		1445
1114	if (length < 0)	1446	if (length < 0)
1115	croak ("length must not be negative");	1447	croak ("length must not be negative");
1116		1448
1117	{	1449	{
1118	dREQ;	1450	dREQ;
1119		1451
1120	req->type = ix;	1452	req->type = ix;
1121	req->fh = newSVsv (fh);	1453	req->sv1 = newSVsv (fh);
1122	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1454	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1123	: IoOFP (sv_2io (fh)));	1455	: IoOFP (sv_2io (fh)));
1124	req->offset = offset;	1456	req->offs = offset;
1125	req->length = length;	1457	req->size = length;
1126	req->data = SvREFCNT_inc (data);	1458	req->sv2 = SvREFCNT_inc (data);
1127	req->dataptr = (char *)svptr + dataoffset;	1459	req->ptr1 = (char *)svptr + dataoffset;
		1460	req->stroffset = dataoffset;
1128		1461
1129	if (!SvREADONLY (data))	1462	if (!SvREADONLY (data))
1130	{	1463	{
1131	SvREADONLY_on (data);	1464	SvREADONLY_on (data);
1132	req->data2ptr = (void *)data;	1465	req->flags |= FLAG_SV2_RO_OFF;
1133	}	1466	}
1134		1467
1135	REQ_SEND;	1468	REQ_SEND;
1136	}	1469	}
1137	}	1470	}
1138		1471
1139	void	1472	void
		1473	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1474	PROTOTYPE: $$;$
		1475	PPCODE:
		1476	{
		1477	SV *data;
		1478	dREQ;
		1479
		1480	data = newSV (NAME_MAX);
		1481	SvPOK_on (data);
		1482
		1483	req->type = REQ_READLINK;
		1484	req->sv1 = newSVsv (path);
		1485	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1486	req->sv2 = data;
		1487	req->ptr1 = SvPVbyte_nolen (data);
		1488
		1489	REQ_SEND;
		1490	}
		1491
		1492	void
1140	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1493	aio_sendfile (SV *out_fh, SV *in_fh, UV in_offset, UV length, SV *callback=&PL_sv_undef)
1141	SV * out_fh
1142	SV * in_fh
1143	UV in_offset
1144	UV length
1145	SV * callback
1146	PROTOTYPE: $$$$;$	1494	PROTOTYPE: $$$$;$
1147	PPCODE:	1495	PPCODE:
1148	{	1496	{
1149	dREQ;	1497	dREQ;
1150		1498
1151	req->type = REQ_SENDFILE;	1499	req->type = REQ_SENDFILE;
1152	req->fh = newSVsv (out_fh);	1500	req->sv1 = newSVsv (out_fh);
1153	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1501	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1154	req->fh2 = newSVsv (in_fh);	1502	req->sv2 = newSVsv (in_fh);
1155	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1503	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1156	req->offset = in_offset;	1504	req->offs = in_offset;
1157	req->length = length;	1505	req->size = length;
1158		1506
1159	REQ_SEND;	1507	REQ_SEND;
1160	}	1508	}
1161		1509
1162	void	1510	void
1163	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1511	aio_readahead (SV *fh, UV offset, IV length, SV *callback=&PL_sv_undef)
1164	SV * fh
1165	UV offset
1166	IV length
1167	SV * callback
1168	PROTOTYPE: $$$;$	1512	PROTOTYPE: $$$;$
1169	PPCODE:	1513	PPCODE:
1170	{	1514	{
1171	dREQ;	1515	dREQ;
1172		1516
1173	req->type = REQ_READAHEAD;	1517	req->type = REQ_READAHEAD;
1174	req->fh = newSVsv (fh);	1518	req->sv1 = newSVsv (fh);
1175	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1519	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1176	req->offset = offset;	1520	req->offs = offset;
1177	req->length = length;	1521	req->size = length;
1178		1522
1179	REQ_SEND;	1523	REQ_SEND;
1180	}	1524	}
1181		1525
1182	void	1526	void
1183	aio_stat (fh_or_path,callback=&PL_sv_undef)	1527	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1184	SV * fh_or_path
1185	SV * callback
1186	ALIAS:	1528	ALIAS:
1187	aio_stat = REQ_STAT	1529	aio_stat = REQ_STAT
1188	aio_lstat = REQ_LSTAT	1530	aio_lstat = REQ_LSTAT
1189	PPCODE:	1531	PPCODE:
1190	{	1532	{
1191	dREQ;	1533	dREQ;
1192		1534
1193	New (0, req->statdata, 1, Stat_t);	1535	req->ptr2 = malloc (sizeof (Stat_t));
1194	if (!req->statdata)	1536	if (!req->ptr2)
1195	{	1537	{
1196	req_free (req);	1538	req_free (req);
1197	croak ("out of memory during aio_req->statdata allocation");	1539	croak ("out of memory during aio_stat statdata allocation");
1198	}	1540	}
		1541
		1542	req->flags |= FLAG_PTR2_FREE;
		1543	req->sv1 = newSVsv (fh_or_path);
1199		1544
1200	if (SvPOK (fh_or_path))	1545	if (SvPOK (fh_or_path))
1201	{	1546	{
1202	req->type = ix;	1547	req->type = ix;
1203	req->data = newSVsv (fh_or_path);
1204	req->dataptr = SvPVbyte_nolen (req->data);	1548	req->ptr1 = SvPVbyte_nolen (req->sv1);
1205	}	1549	}
1206	else	1550	else
1207	{	1551	{
1208	req->type = REQ_FSTAT;	1552	req->type = REQ_FSTAT;
1209	req->fh = newSVsv (fh_or_path);
1210	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1553	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1211	}	1554	}
1212		1555
1213	REQ_SEND;	1556	REQ_SEND;
1214	}	1557	}
1215		1558
1216	void	1559	void
		1560	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1561	PPCODE:
		1562	{
		1563	dREQ;
		1564
		1565	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1566	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1567	req->sv1 = newSVsv (fh_or_path);
		1568
		1569	if (SvPOK (fh_or_path))
		1570	{
		1571	req->type = REQ_UTIME;
		1572	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1573	}
		1574	else
		1575	{
		1576	req->type = REQ_FUTIME;
		1577	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1578	}
		1579
		1580	REQ_SEND;
		1581	}
		1582
		1583	void
		1584	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1585	PPCODE:
		1586	{
		1587	dREQ;
		1588
		1589	req->mode = mode;
		1590	req->sv1 = newSVsv (fh_or_path);
		1591
		1592	if (SvPOK (fh_or_path))
		1593	{
		1594	req->type = REQ_CHMOD;
		1595	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1596	}
		1597	else
		1598	{
		1599	req->type = REQ_FCHMOD;
		1600	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1601	}
		1602
		1603	REQ_SEND;
		1604	}
		1605
		1606	void
		1607	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1608	PPCODE:
		1609	{
		1610	dREQ;
		1611
		1612	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1613	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1614	req->sv1 = newSVsv (fh_or_path);
		1615
		1616	if (SvPOK (fh_or_path))
		1617	{
		1618	req->type = REQ_CHOWN;
		1619	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1620	}
		1621	else
		1622	{
		1623	req->type = REQ_FCHOWN;
		1624	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1625	}
		1626
		1627	REQ_SEND;
		1628	}
		1629
		1630	void
1217	aio_unlink (pathname,callback=&PL_sv_undef)	1631	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1218	SV * pathname
1219	SV * callback
1220	ALIAS:	1632	ALIAS:
1221	aio_unlink = REQ_UNLINK	1633	aio_unlink = REQ_UNLINK
1222	aio_rmdir = REQ_RMDIR	1634	aio_rmdir = REQ_RMDIR
1223	aio_readdir = REQ_READDIR	1635	aio_readdir = REQ_READDIR
1224	PPCODE:	1636	PPCODE:
1225	{	1637	{
1226	dREQ;	1638	dREQ;
1227		1639
1228	req->type = ix;	1640	req->type = ix;
1229	req->data = newSVsv (pathname);	1641	req->sv1 = newSVsv (pathname);
1230	req->dataptr = SvPVbyte_nolen (req->data);	1642	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1643
		1644	REQ_SEND;
		1645	}
		1646
		1647	void
		1648	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1649	PPCODE:
		1650	{
		1651	dREQ;
1231		1652
		1653	req->type = REQ_MKDIR;
		1654	req->sv1 = newSVsv (pathname);
		1655	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1656	req->mode = mode;
		1657
1232	REQ_SEND;	1658	REQ_SEND;
1233	}	1659	}
1234		1660
1235	void	1661	void
1236	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1662	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1237	SV * oldpath
1238	SV * newpath
1239	SV * callback
1240	ALIAS:	1663	ALIAS:
1241	aio_link = REQ_LINK	1664	aio_link = REQ_LINK
1242	aio_symlink = REQ_SYMLINK	1665	aio_symlink = REQ_SYMLINK
1243	aio_rename = REQ_RENAME	1666	aio_rename = REQ_RENAME
1244	PPCODE:	1667	PPCODE:
1245	{	1668	{
1246	dREQ;	1669	dREQ;
1247		1670
1248	req->type = ix;	1671	req->type = ix;
1249	req->fh = newSVsv (oldpath);	1672	req->sv2 = newSVsv (oldpath);
1250	req->data2ptr = SvPVbyte_nolen (req->fh);	1673	req->ptr2 = SvPVbyte_nolen (req->sv2);
1251	req->data = newSVsv (newpath);	1674	req->sv1 = newSVsv (newpath);
1252	req->dataptr = SvPVbyte_nolen (req->data);	1675	req->ptr1 = SvPVbyte_nolen (req->sv1);
1253		1676
1254	REQ_SEND;	1677	REQ_SEND;
1255	}	1678	}
1256		1679
1257	void	1680	void
1258	aio_sleep (delay,callback=&PL_sv_undef)	1681	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1259	double delay
1260	SV * callback
1261	PPCODE:	1682	PPCODE:
1262	{	1683	{
1263	dREQ;	1684	dREQ;
1264		1685
1265	req->type = REQ_SLEEP;	1686	req->type = REQ_MKNOD;
1266	req->fd = delay < 0. ? 0 : delay;	1687	req->sv1 = newSVsv (pathname);
1267	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1688	req->ptr1 = SvPVbyte_nolen (req->sv1);
1268		1689	req->mode = (mode_t)mode;
		1690	req->offs = dev;
		1691
1269	REQ_SEND;	1692	REQ_SEND;
1270	}	1693	}
1271		1694
1272	void	1695	void
		1696	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1697	PPCODE:
		1698	{
		1699	dREQ;
		1700
		1701	req->type = REQ_BUSY;
		1702	req->nv1 = delay < 0. ? 0. : delay;
		1703
		1704	REQ_SEND;
		1705	}
		1706
		1707	void
1273	aio_group (callback=&PL_sv_undef)	1708	aio_group (SV *callback=&PL_sv_undef)
1274	SV * callback
1275	PROTOTYPE: ;$	1709	PROTOTYPE: ;$
1276	PPCODE:	1710	PPCODE:
1277	{	1711	{
1278	dREQ;	1712	dREQ;
1279		1713
1280	req->type = REQ_GROUP;	1714	req->type = REQ_GROUP;
		1715
1281	req_send (req);	1716	req_send (req);
1282
1283	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1717	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1284	}	1718	}
1285		1719
1286	void	1720	void
1287	aio_nop (callback=&PL_sv_undef)	1721	aio_nop (SV *callback=&PL_sv_undef)
1288	SV * callback
1289	PPCODE:	1722	PPCODE:
1290	{	1723	{
1291	dREQ;	1724	dREQ;
1292		1725
1293	req->type = REQ_NOP;	1726	req->type = REQ_NOP;
1294		1727
1295	REQ_SEND;	1728	REQ_SEND;
1296	}	1729	}
1297		1730
1298	#if 0	1731	int
1299		1732	aioreq_pri (int pri = 0)
1300	void	1733	PROTOTYPE: ;$
1301	aio_pri (int pri = DEFAULT_PRI)
1302	CODE:	1734	CODE:
		1735	RETVAL = next_pri - PRI_BIAS;
		1736	if (items > 0)
		1737	{
1303	if (pri < PRI_MIN) pri = PRI_MIN;	1738	if (pri < PRI_MIN) pri = PRI_MIN;
1304	if (pri > PRI_MAX) pri = PRI_MAX;	1739	if (pri > PRI_MAX) pri = PRI_MAX;
1305	next_pri = pri + PRI_BIAS;	1740	next_pri = pri + PRI_BIAS;
		1741	}
		1742	OUTPUT:
		1743	RETVAL
1306		1744
1307	#endif	1745	void
		1746	aioreq_nice (int nice = 0)
		1747	CODE:
		1748	nice = next_pri - nice;
		1749	if (nice < PRI_MIN) nice = PRI_MIN;
		1750	if (nice > PRI_MAX) nice = PRI_MAX;
		1751	next_pri = nice + PRI_BIAS;
1308		1752
1309	void	1753	void
1310	flush ()	1754	flush ()
1311	PROTOTYPE:	1755	PROTOTYPE:
1312	CODE:	1756	CODE:
…		…
1314	{	1758	{
1315	poll_wait ();	1759	poll_wait ();
1316	poll_cb ();	1760	poll_cb ();
1317	}	1761	}
1318		1762
1319	void	1763	int
1320	poll()	1764	poll()
1321	PROTOTYPE:	1765	PROTOTYPE:
1322	CODE:	1766	CODE:
1323	if (nreqs)
1324	{
1325	poll_wait ();	1767	poll_wait ();
1326	poll_cb ();	1768	RETVAL = poll_cb ();
1327	}	1769	OUTPUT:
		1770	RETVAL
1328		1771
1329	int	1772	int
1330	poll_fileno()	1773	poll_fileno()
1331	PROTOTYPE:	1774	PROTOTYPE:
1332	CODE:	1775	CODE:
…		…
1344		1787
1345	void	1788	void
1346	poll_wait()	1789	poll_wait()
1347	PROTOTYPE:	1790	PROTOTYPE:
1348	CODE:	1791	CODE:
1349	if (nreqs)
1350	poll_wait ();	1792	poll_wait ();
		1793
		1794	void
		1795	setsig (int signum = SIGIO)
		1796	PROTOTYPE: ;$
		1797	CODE:
		1798	{
		1799	if (block_sig_level)
		1800	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1801
		1802	LOCK (reslock);
		1803	main_tid = pthread_self ();
		1804	main_sig = signum;
		1805	UNLOCK (reslock);
		1806
		1807	if (main_sig && npending)
		1808	pthread_kill (main_tid, main_sig);
		1809	}
		1810
		1811	void
		1812	aio_block (SV *cb)
		1813	PROTOTYPE: &
		1814	PPCODE:
		1815	{
		1816	int count;
		1817
		1818	block_sig ();
		1819	PUSHMARK (SP);
		1820	PUTBACK;
		1821	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1822	SPAGAIN;
		1823	unblock_sig ();
		1824
		1825	if (SvTRUE (ERRSV))
		1826	croak (0);
		1827
		1828	XSRETURN (count);
		1829	}
1351		1830
1352	int	1831	int
1353	nreqs()	1832	nreqs()
1354	PROTOTYPE:	1833	PROTOTYPE:
1355	CODE:	1834	CODE:
1356	RETVAL = nreqs;	1835	RETVAL = nreqs;
1357	OUTPUT:	1836	OUTPUT:
1358	RETVAL	1837	RETVAL
1359		1838
		1839	int
		1840	nready()
		1841	PROTOTYPE:
		1842	CODE:
		1843	RETVAL = get_nready ();
		1844	OUTPUT:
		1845	RETVAL
		1846
		1847	int
		1848	npending()
		1849	PROTOTYPE:
		1850	CODE:
		1851	RETVAL = get_npending ();
		1852	OUTPUT:
		1853	RETVAL
		1854
		1855	int
		1856	nthreads()
		1857	PROTOTYPE:
		1858	CODE:
		1859	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1860	RETVAL = started;
		1861	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1862	OUTPUT:
		1863	RETVAL
		1864
1360	PROTOTYPES: DISABLE	1865	PROTOTYPES: DISABLE
1361		1866
1362	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1867	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1363		1868
1364	void	1869	void
1365	cancel (aio_req_ornot req)	1870	cancel (aio_req_ornot req)
1366	PROTOTYPE:
1367	CODE:	1871	CODE:
1368	req_cancel (req);	1872	req_cancel (req);
1369		1873
1370	void	1874	void
1371	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1875	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1380	PPCODE:	1884	PPCODE:
1381	{	1885	{
1382	int i;	1886	int i;
1383	aio_req req;	1887	aio_req req;
1384		1888
		1889	if (main_sig && !block_sig_level)
		1890	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1891
1385	if (grp->fd == 2)	1892	if (grp->int1 == 2)
1386	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1893	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1387		1894
1388	for (i = 1; i < items; ++i )	1895	for (i = 1; i < items; ++i )
1389	{	1896	{
1390	if (GIMME_V != G_VOID)	1897	if (GIMME_V != G_VOID)
…		…
1392		1899
1393	req = SvAIO_REQ (ST (i));	1900	req = SvAIO_REQ (ST (i));
1394		1901
1395	if (req)	1902	if (req)
1396	{	1903	{
1397	++grp->length;	1904	++grp->size;
1398	req->grp = grp;	1905	req->grp = grp;
1399		1906
1400	req->grp_prev = 0;	1907	req->grp_prev = 0;
1401	req->grp_next = grp->grp_first;	1908	req->grp_next = grp->grp_first;
1402		1909
…		…
1407	}	1914	}
1408	}	1915	}
1409	}	1916	}
1410		1917
1411	void	1918	void
		1919	cancel_subs (aio_req_ornot req)
		1920	CODE:
		1921	req_cancel_subs (req);
		1922
		1923	void
1412	result (aio_req grp, ...)	1924	result (aio_req grp, ...)
1413	CODE:	1925	CODE:
1414	{	1926	{
1415	int i;	1927	int i;
		1928	AV *av;
		1929
		1930	grp->errorno = errno;
		1931
1416	AV *av = newAV ();	1932	av = newAV ();
1417		1933
1418	for (i = 1; i < items; ++i )	1934	for (i = 1; i < items; ++i )
1419	av_push (av, newSVsv (ST (i)));	1935	av_push (av, newSVsv (ST (i)));
1420		1936
1421	SvREFCNT_dec (grp->data);	1937	SvREFCNT_dec (grp->sv1);
1422	grp->data = (SV *)av;	1938	grp->sv1 = (SV *)av;
1423	}	1939	}
1424		1940
1425	void	1941	void
		1942	errno (aio_req grp, int errorno = errno)
		1943	CODE:
		1944	grp->errorno = errorno;
		1945
		1946	void
1426	feed_limit (aio_req grp, int limit)	1947	limit (aio_req grp, int limit)
1427	CODE:	1948	CODE:
1428	grp->fd2 = limit;	1949	grp->int2 = limit;
1429	aio_grp_feed (grp);	1950	aio_grp_feed (grp);
1430		1951
1431	void	1952	void
1432	feed (aio_req grp, SV *callback=&PL_sv_undef)	1953	feed (aio_req grp, SV *callback=&PL_sv_undef)
1433	CODE:	1954	CODE:
1434	{	1955	{
1435	SvREFCNT_dec (grp->fh2);	1956	SvREFCNT_dec (grp->sv2);
1436	grp->fh2 = newSVsv (callback);	1957	grp->sv2 = newSVsv (callback);
1437		1958
1438	if (grp->fd2 <= 0)	1959	if (grp->int2 <= 0)
1439	grp->fd2 = 2;	1960	grp->int2 = 2;
1440		1961
1441	aio_grp_feed (grp);	1962	aio_grp_feed (grp);
1442	}	1963	}
1443		1964

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